org.apache.commons.collections4.functors
Class TransformerPredicate<T>

java.lang.Object
  extended by org.apache.commons.collections4.functors.TransformerPredicate<T>
All Implemented Interfaces:
Serializable, Predicate<T>

public final class TransformerPredicate<T>
extends Object
implements Predicate<T>, Serializable

Predicate implementation that returns the result of a transformer.

Since:
3.0
Version:
$Id: TransformerPredicate.java 1476582 2013-04-27 14:13:54Z tn $
See Also:
Serialized Form

Constructor Summary
TransformerPredicate(Transformer<? super T,Boolean> transformer)
          Constructor that performs no validation.
 
Method Summary
 boolean evaluate(T object)
          Evaluates the predicate returning the result of the decorated transformer.
 Transformer<? super T,Boolean> getTransformer()
          Gets the transformer.
static
<T> Predicate<T>
transformerPredicate(Transformer<? super T,Boolean> transformer)
          Factory to create the predicate.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TransformerPredicate

public TransformerPredicate(Transformer<? super T,Boolean> transformer)
Constructor that performs no validation. Use transformerPredicate if you want that.

Parameters:
transformer - the transformer to decorate
Method Detail

transformerPredicate

public static <T> Predicate<T> transformerPredicate(Transformer<? super T,Boolean> transformer)
Factory to create the predicate.

Type Parameters:
T - the type that the predicate queries
Parameters:
transformer - the transformer to decorate
Returns:
the predicate
Throws:
IllegalArgumentException - if the transformer is null

evaluate

public boolean evaluate(T object)
Evaluates the predicate returning the result of the decorated transformer.

Specified by:
evaluate in interface Predicate<T>
Parameters:
object - the input object
Returns:
true if decorated transformer returns Boolean.TRUE
Throws:
FunctorException - if the transformer returns an invalid type

getTransformer

public Transformer<? super T,Boolean> getTransformer()
Gets the transformer.

Returns:
the transformer
Since:
3.1


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